公开(公告)号：US20230393205A1

公开(公告)日：2023-12-07

申请号：US18247356

申请日：2021-09-22

Applicant: GS Yuasa International Ltd.

Inventor： Masaki OYA ,  Yu MATSUMOTO ,  Shinichi NAMITOKO ,  Seiji TAKAI ,  Eiji HAYASHI

IPC: G01R31/367 ,  G01R31/00

CPC classification number: G01R31/367 ,  G01R31/006

Abstract: Provided are a computer program, a determination device, and a determination method. A computer is caused to execute a process of estimating a state of at least one of an energy storage device and a charge system by executing a simulation using a battery model for simulating the energy storage device and a charge system model for simulating the charge system that charges the energy storage device and determining the compatibility between the energy storage device and the charge system based on the estimated state.

公开(公告)号：US20230382231A1

公开(公告)日：2023-11-30

申请号：US18247208

申请日：2021-08-25

Applicant: GS Yuasa International Ltd.

Inventor： Yu MATSUMOTO ,  Seiji TAKAI ,  Eiji HAYASHI ,  Shinichi NAMITOKO ,  Masaki OYA

IPC: B60L3/12 ,  B60L58/10 ,  B60L50/60

CPC classification number: B60L3/12 ,  B60L58/10 ,  B60L50/60

Abstract: A computer is caused to execute a process of; executing, for a system including an energy storage device and a powered unit driven by power supplied from the energy storage device wherein the energy storage device including a switch for switching between energized and non-energized states and having a switch self-diagnosis function, a simulation regarding switch self-diagnosis using a battery model for simulating the energy storage device and a powered-unit model for simulating the powered unit; and determining compatibility between the energy storage device and the powered unit based on an execution result of the simulation.

公开(公告)号：US20250091479A1

公开(公告)日：2025-03-20

申请号：US18719072

申请日：2022-12-06

Applicant: GS Yuasa International Ltd.

Inventor： Hironori AIDA ,  Seiji TAKAI ,  Koichi NISHIYAMA ,  Ryoichi OKUYAMA

IPC: B60L58/18 ,  H02J9/06

Abstract: A power supply system (1) included in a moving body (2) includes a main power supply (11) having a plurality of energy storage devices (10) and connected to a drive system (3) for moving the moving body (2). A first device group (21) including at least one energy storage device (10) among the plurality of energy storage devices (10) is a backup power supply configured to be connected to an auxiliary machine system (4) of the moving body (2).

公开(公告)号：US20240288503A1

公开(公告)日：2024-08-29

申请号：US18563639

申请日：2022-04-13

Applicant: GS Yuasa International Ltd.

Inventor： Yuki IMANAKA ,  Seiji TAKAI

IPC: G01R31/387 ,  G01R31/36

CPC classification number: G01R31/387 ,  G01R31/3648

Abstract: A correction device that corrects a measured value of a current of an energy storage cell or an assembled battery is configured to calculate a correction value of the measured value of the current based on an SOC difference between a first SOC of the energy storage cell or the assembled battery estimated based on an integrated value of the measured values of the current and a second SOC of the energy storage cell or the assembled battery estimated based on a voltage of the energy storage cell or the assembled battery and is configured to correct the measured value of the current based on the calculated correction value.

公开(公告)号：US20220170990A1

公开(公告)日：2022-06-02

申请号：US17442761

申请日：2020-03-24

Applicant: GS Yuasa International Ltd.

Inventor： Seiji TAKAI

IPC: G01R31/387 ,  G01R1/20 ,  H01M10/42 ,  H01M10/48 ,  H02H7/18

Abstract: A battery management device manages an energy storage device to which a shunt resistor is connected. The battery management device includes: a current measurement unit that measures a current flowing through the shunt resistor using a pair of signal wires connected to both ends of the shunt resistor; a connecting wire that connects the signal wire to a reference potential source via an opening/closing switch; and a determination unit that determines presence or absence of a failure in which connection between the pair of signal wires via the shunt resistor becomes defective based on a change in current measured by the current measurement unit when the opening/closing switch is opened and closed.

公开(公告)号：US20200379050A1

公开(公告)日：2020-12-03

申请号：US16766550

申请日：2018-12-04

Applicant: GS Yuasa International Ltd.

Inventor： Yuki IMANAKA ,  Seiji TAKAI ,  Masayuki IMURA

IPC: G01R31/367 ,  G01R35/00 ,  G01R31/00 ,  H01M10/48 ,  H01M10/42 ,  H02J7/00

Abstract: A measurement device 50 of an electrochemical element 30 that is connected, via a first switch 40, to a terminal part 22P having a load connected thereto, wherein: the measurement device 50 is provided with a current limitation unit 75 provided to a bypass path BP of the first switch 40, a current sensor 60 for measuring the current of the electrochemical element 30, and a processing unit 100; when a voltage difference ΔV between the voltage of the electrochemical element 30 and the voltage of the terminal part 22P is equal to or greater than a prescribed value, the current limitation unit 75 permits the supply of power to the load through the bypass path BP, and when the voltage difference ΔV is less than the prescribed value, the current limitation unit 75 cuts off the current to the bypass path BP; and in a period of time after the first switch 40 has been turned off and until the voltage difference ΔV reaches the prescribed value due to a change in voltage of the terminal part 22P because of discharging of a charge/discharge element 170 connected in parallel to the load, the processing unit 100 performs a measurement process to measure the offset error ε of the current sensor 60.